# Advanced Integration: Lead Data Flow

#### Lead Data Connectivity

While Calcumate provides a built-in lead capture form, you may want to pass that data to external systems.

**Data Direction**

* FROM Calcumate TO External Systems: Supported. You can capture lead details via JavaScript events.
* FROM External Systems TO Calcumate: Not Supported. Calcumate does not currently accept lead data (Name, Email, Phone) via URL parameters to pre-populate its internal forms.

**Capturing Lead Details via JavaScript**

If you have "Request lead details from the user" enabled, Calcumate triggers a `userDetails` event whenever a user submits the lead form. You can listen for this on your host page to trigger secondary actions:

JavaScript

```
window.addEventListener('userDetails', (e) => {
  const { name, email, phone } = e.detail; // or other fields you added to the form
  console.log("Lead captured:", name, email, phone);
});
```

**Important Note on URL Parameters**

When using the CTA redirect feature, Calcumate appends calculation data (e.g., `cm-qty`, `cm-volume`, `cm-location`) to the URL. However, for privacy and security, Lead/Contact details are not included in URL parameters. Use the `userDetails` event above to handle contact information.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://help.calcumate.co/driving-conversions-and-efficiency-with-lead-capture/advanced-integration-lead-data-flow.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.